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Product Summary

Circular gasket is a mechanical seal that fills the space between two mating surfaces, generally to prevent leakage from or into the joined objects while under compression. Circular gaskets allow "less-than-perfect" mating surfaces on machine parts where they can fill irregularities. Circular gaskets are commonly produced by cutting from sheet materials, such as gasket paper, rubber, silicone, metal, cork, felt, neoprene, nitrile rubber, fiberglass, Polytetrafluoroethylene (otherwise know as PTFE) or a plastic polymer (such as polychlorotrifluoroethylene).

Circular gasket is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a disc-shaped cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface. The circular gasket may be used in static applications or in dynamic applications where there is relative motion between the parts and the circular gasket. Dynamic examples include rotating pump shafts and hydraulic cylinder pistons. Circular gaskets are one of the most common seals used in machine design because they are inexpensive, easy to make, reliable, and have simple mounting requirements. It is usually desirable that the circular gasket be made from a material that is to some degree yielding such that it is able to deform and tightly fills the space it is designed for, including any slight irregularities. A few circular gaskets require an application of sealant directly to the gasket surface to function properly.